"Hanging out with these guys today," Esmail captioned a pic of a couple of gorillas on Thursday.

"Trekked into the mountains in Rwanda with the park rangers who dedicate their lives to the protection and conservation of the mountain gorillas," Rossum captioned a video from their gorilla encounter. "Truly once in a lifetime experience learning how to respect, understand and communicate with them, continuing the work of Dian Fossey."

Rossum and Esmail also spent time with the locals and few other adorable animals.